hg: jdk9/sandbox/langtools: Merge

[erik.joelsson at oracle.com]

Changeset: 59d18f7de128
Author:    erikj
Date:      2016-01-13 11:13 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/59d18f7de128

Merge

- test/tools/javac/api/T6430241.java
- test/tools/javac/file/BootClassPathPrepend.java